Inventory

items = input().split(', ')

while True:
    command = input()
    if command == 'Craft!':
        print(f'{", ".join(items)}')
        break

    tokens = command.split(' - ')
    if tokens[0] == 'Collect':
        item = tokens[1]
        if item not in items:
            items.append(item)
    elif tokens[0] == 'Drop':
        item = tokens[1]
        if item in items:
            items.remove(item)
    elif tokens[0] == 'Combine Items':
        args = tokens[1].split(':')
        old_item = args[0]
        new_item = args[1]
        if old_item in items:
            index = items.index(old_item) + 1
            items.insert(index, new_item)
    elif tokens[0] == 'Renew':
        item = tokens[1]
        if item in items:
            current_item = item
            items.remove(item)
            items.append(current_item)